<template>
  <div id="main-container" class="main-container"
       :class="$store.state.app.collapse ? 'position-collapse-left':'position-left'">
    <!--标签页-->
    <div class="tab-container">
      <el-tabs class="tabs"
               :class="$store.state.app.collapse ? 'position-collapse-left':'position-left'"
               v-model="mainTabsActiveName"
               :closable="true"
               type="card"
               @tab-click="selectedTabHandle"
               @tab-remove="removeTabHandle">
        <el-dropdown class="tabs-tools" :show-timeout="0" trigger="hover">
          <div style="font-size:20px;width:50px;"><i class="el-icon-arrow-down"></i></div>
          <el-dropdown-menu slot="dropdown">
            <el-dropdown-item @click.native="tabsCloseCurrentHandle">关闭当前标签</el-dropdown-item>
            <el-dropdown-item @click.native="tabsCloseOtherHandle">关闭其他标签</el-dropdown-item>
            <el-dropdown-item @click.native="tabsCloseAllHandle">关闭全部标签</el-dropdown-item>
            <el-dropdown-item @click.native="tabsRefreshCurrentHandle">刷新当前标签</el-dropdown-item>
          </el-dropdown-menu>
        </el-dropdown>
        <el-tab-pane v-for="item in mainTabs"
                     :key="item.name"
                     :label="item.name"
                     :name="item.name">
          <span slot="label"><i :class="item.icon"></i>{{item.name}}</span>
        </el-tab-pane>
      </el-tabs>
    </div>
    <!--主内容区域-->
    <div class="main-content">
      <keep-alive>
        <transition name="fade" mode="out-in">
          <router-view></router-view>
        </transition>
      </keep-alive>
    </div>
  </div>
</template>

<script>
  /*主内容区域*/
  export default {
    name: "MainContent",
    computed: {
      mainTabs: {
        get() {
          return this.$store.state.tab.mainTabs;
        },
        set(val) {
          this.$store.commit('updateMainTabs', val);
        }
      },
      mainTabsActiveName: {
        get() {
          return this.$store.state.tab.mainTabsActiveName;
        },
        set(val) {
          this.$store.commit('updateMainTabsActiveName', val);
        }
      }
    },
    methods: {
      // tabs, 选中tab
      selectedTabHandle(tab) {
        tab = this.mainTabs.filter(it => it.name === tab.name);
        if (tab.length >= 1) {
          this.$router.push({name: tab[0].name});
        }
      },
      //tabs，删除tab
      removeTabHandle(tabName) {
        this.mainTabs = this.mainTabs.filter(it => it.name !== tabName);
        if (this.mainTabs.length >= 1) {
          //当前选中tab被删除
          if (tabName === this.mainTabsActiveName) {
            this.$router.push({name: this.mainTabs[this.mainTabs.length - 1].name}, () => {
              this.mainTabsActiveName = this.$route.name;
            })
          }
        } else {
          this.$router.push('/');
        }
      },
      //tabs，关闭当前
      tabsCloseCurrentHandle() {
        this.removeTabHandle(this.mainTabsActiveName);
      },
      //tabs，关闭其他
      tabsCloseOtherHandle() {
        this.mainTabs = this.mainTabs.filter(it => it.name === this.mainTabsActiveName);
      },
      //tabs,关闭全部
      tabsCloseAllHandle() {
        this.mainTabs = [];
        this.$router.push('/');
      },
      //tabs,刷新当前
      tabsRefreshCurrentHandle() {
        let tempTabName = this.mainTabsActiveName;
        this.removeTabHandle(tempTabName);
        this.$nextTick(() => {
          this.$router.push({name: tempTabName});
        })
      }
    }
  }
</script>

<style scoped>
  .main-container {
    padding: 0 5px 5px;
    position: absolute;
    top: 60px;
    left: 1px;
    right: 1px;
    bottom: 0;
    background: rgba(67, 69, 70, 0.1);
  }

  .main-container .tabs {
    position: fixed;
    top: 60px;
    right: 50px;
    padding-left: 0;
    padding-right: 2px;
    z-index: 1020;
    height: 40px;
    line-height: 40px;
    font-size: 14px;
    background: rgb(255, 253, 255);
    border-color: rgba(200, 206, 206, 0.5);
  / / border-left-width: 1 px;
  / / border-left-style: solid;
    border-bottom-width: 1px;
    border-bottom-style: solid;
  }

  .main-container .tabs-tools {
    position: fixed;
    top: 60px;
    right: 0;
    z-index: 1020;
    height: 40px;
  / / padding: 0 10 px;
    font-size: 14px;
    line-height: 40px;
    cursor: pointer;
    border-color: rgba(200, 206, 206, 0.5);
    border-left-width: 1px;
    border-left-style: solid;
    border-bottom-width: 1px;
    border-bottom-style: solid;
    background: rgba(255, 255, 255, 1);
  }

  .main-container .tabs-tools:hover {
    background: rgba(200, 206, 206, 1);
  }

  .main-container .main-content {
    position: absolute;
    top: 45px;
    left: 5px;
    right: 5px;
    bottom: 5px;
    padding: 5px;
    background: rgba(209, 212, 212, 0.5);
  }

  .position-left {
    left: 200px;
  }

  .position-collapse-left {
    left: 65px;
  }
</style>
